"But this was not by any means all. It appears that for some reason which was never quite clear, Captain Shillington, after he said good-night to Lady Angela, altered his mind about the proposed walk. It may have started to rain, or he may not, after all, have liked the idea of walking about the streets at night with twenty-five thousand pounds' worth of pearls in his pocket. Be that as it may, he hailed a passing taxi and drove to Mexfield House. The driver came forward voluntarily in answer to an advertisement put in the papers by the police. He stated that he remembered the circumstance quite well because of what followed. He remembered taking up a fare outside Stanhope Gate and being ordered to drive to Mexfield House in Somerset Street. When he slowed down close to Mexfield House he noticed a man with his hands in his pockets lounging under the doorway of one of the houses close by. As far as he could see the man was in evening dress and wore a light overcoat. He had on a silk hat tilted right over his eyes so that only the lower part of his face was visible, and he had a white or pale grey scarf tied loosely round his neck. The chauffeur also noticed that he had a large white flower, probably a carnation, in his buttonhole. After the taxi-man had put down his fare he drove off, and as he did so he saw the man in the light overcoat step out from under the doorway, where he had been lounging, and turn in the direction of Mexfield House. What happened after that he didn't know, as he drove away without taking further notice, but the police were already in touch with another man who had been watching that night in Somerset Street, where a portion of the road was up for repair. This man, whose name, I think, was William Rugger, remembered quite distinctly seeing a 'swell' in a light overcoat and wearing a light-coloured scarf round his neck, loafing around Mexfield House. He remembered the taxi drawing up and a gentleman getting out of it, whereupon the one in the light overcoat and the scarf went up to him and said, 'Hullo, Denver!' at which the other gent, the one who had come in the taxi, appeared very surprised, for Rugger heard him say, 'Good Lord, Henry, what are you doing here?' "Rugger didn't hear any more because the gentleman in the light overcoat then took the other one by the arm and together the pair of them walked away down the street. When they had gone Rugger noticed a large white carnation lying on the pavement; he picked it up and subsequently took it home to his missis.